From: Philippe Gerum <rpm@xenomai.org>
To: Filip Van Rillaer <Filip.VanRillaer@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] xnpipe EPOLLIN starvation
Date: Fri, 22 Aug 2008 22:22:23 +0200 [thread overview]
Message-ID: <48AF1FFF.7050906@domain.hid> (raw)
In-Reply-To: <406CC9939904F143B9D42CEEA3E56E563EE1D6@domain.hid>
Filip Van Rillaer wrote:
> Hello Philippe,
>
> FYI: As I was not 100% sure that the EPOLLET of a read on a fd didn't
> impact the write on the same fd, I just made a new version of xenopipe
> (still with epoll) with separate filedescriptors for read and write in
> the epoll_ctl. So epoll_wait has 4 entries : fd_tty1_read,
> fd_tty1_write, fd_pipe_read, fd_pipe_write ... but the problem remains.
>
> To be able to open a pipe (e.g. /dev/rtp1) once as O_WRONLY and once as
> O_RDONLY, I had to hack the pipe-code. It would be nice if this would
> be possible without hacking the code.
>
You may want to retry using epoll() with the latest updates committed.
> Best regards,
> Filip
>
>
--
Philippe.
next prev parent reply other threads:[~2008-08-22 20:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-31 9:20 [Xenomai-help] xnpipe EPOLLIN starvation Filip Van Rillaer
2008-07-31 10:12 ` Gilles Chanteperdrix
2008-07-31 10:20 ` Filip Van Rillaer
2008-07-31 10:33 ` Philippe Gerum
2008-07-31 10:45 ` Filip Van Rillaer
[not found] ` <4891D5A3.1060004@domain.hid>
[not found] ` <406CC9939904F143B9D42CEEA3E56E563EE103@domain.hid>
[not found] ` <4891DEBC.2050400@domain.hid>
2008-08-01 10:50 ` Filip Van Rillaer
2008-08-22 20:22 ` Philippe Gerum [this message]
2008-07-31 12:14 ` Gilles Chanteperdrix
2008-07-31 13:27 ` Filip Van Rillaer
2008-07-31 14:21 ` Philippe Gerum
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=48AF1FFF.7050906@domain.hid \
--to=rpm@xenomai.org \
--cc=Filip.VanRillaer@domain.hid \
--cc=xenomai@xenomai.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.